Which Gemini models are affected?

Gemini 3.1 Pro: likely watermarked. Gemini 3.6 Flash: likely watermarked. Gemini 3.5 Flash: likely watermarked. Gemini 3.5 Flash-Lite: likely watermarked. Gemini 3 Pro: likely watermarked. Gemini 2.5 Flash: likely watermarked. Imagen: confirmed watermarking.

Does the tool need an account?

No. Remove LLM Watermark runs free without signing in; an account only raises the daily limit and unlocks the API.

Remove Gemini watermarks

Likely watermarked for Gemini. Paste any Gemini output into the scanner above to see exactly what is in it; pick your model below for what to expect from that specific version.

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Paste your text

Cleaned

Invisible charactersZero-width spaces, joiners, bidi controlsVariation selectorsIncluding the U+E0100 supplement and tag charactersLook-alike lettersCyrillic and Greek letters inside Latin wordsExotic spacesNon-breaking, thin and narrow spacesFold punctuationCurly quotes and em dashes to ASCII. Changes styleTidy whitespaceCollapse double spaces and trailing blanks

Gemini models

Remove Gemini 3.1 Pro watermarkStatistical (token-level) watermarks · Typographic punctuation · Non-breaking and exotic spacesLikely Remove Gemini 3.6 Flash watermarkStatistical (token-level) watermarks · Typographic punctuationLikely Remove Gemini 3.5 Flash watermarkStatistical (token-level) watermarks · Typographic punctuationLikely Remove Gemini 3.5 Flash-Lite watermarkStatistical (token-level) watermarks · Typographic punctuationLikely Remove Gemini 3 Pro watermarkStatistical (token-level) watermarks · Typographic punctuation · Non-breaking and exotic spacesLikely Remove Gemini 2.5 Flash watermarkStatistical (token-level) watermarks · Typographic punctuationLikely Remove Imagen watermarkFile and document metadataConfirmed

Background

Where Gemini stands

Google's SynthID covers images, audio and video, and SynthID-Text extends it to text through watermarked token sampling. Because a statistical watermark lives in the word choices rather than in the characters, removing it means rewriting. This site states that limit rather than hiding it.

What this cannot do

There are two different things people mean by an AI watermark, and only one of them is something a cleaner can touch.

The first lives in the characters: invisible code points, look-alike letters, unusual spaces. Those are data added to the string, and removing them is exact and verifiable. The report tells you precisely what came out.

The second is statistical. A key biases which words the model picks, so the mark is spread across the word choices themselves and nothing was inserted at all. No character-level tool can remove that, including this one. Only rewriting enough of the wording does, and any site claiming otherwise is selling you something. We would rather say so than let you publish on a false assumption.

Step by step

Paste the textPaste the Gemini output into the box at the top of this page. It stays in your browser tab; the scan runs against the characters, not against any account you have.
Read the reportEvery flagged character is listed with its Unicode name and code point, so you can verify the finding in any hex editor rather than taking our word for it.
Copy the clean textThe cleaned copy is byte-identical to what you pasted apart from the characters listed in the report. Nothing is rephrased, and nothing is sent anywhere.

Questions

Does Gemini watermark its output?: Likely watermarked. Google's SynthID covers images, audio and video, and SynthID-Text extends it to text through watermarked token sampling. Because a statistical watermark lives in the word choices rather than in the characters, removing it means rewriting. This site states that limit rather than hiding it.
Which Gemini models are affected?: Gemini 3.1 Pro: likely watermarked. Gemini 3.6 Flash: likely watermarked. Gemini 3.5 Flash: likely watermarked. Gemini 3.5 Flash-Lite: likely watermarked. Gemini 3 Pro: likely watermarked. Gemini 2.5 Flash: likely watermarked. Imagen: confirmed watermarking.
Does the tool need an account?: No. Remove LLM Watermark runs free without signing in; an account only raises the daily limit and unlocks the API.